Feb 28, 2017
The asymmetric pattern of wear on this door is an example of erosion, but there is a confound in this unobtrusive measure. The wear could indicate a higher frequency of right-handed people using the door. Or, consistent with the cultural norm of driving on the right side of the road and walking on the right side of the sidewalk, it could reflect people’s preference to use the door on the right rather than left side.